Answer:
The number of white blood cells in the blood can increase during an immune response. These cells travel through the circulatory system and the lymphatic system to an injured or infected area of the body. White blood cells leave the blood vessels and travel into the damaged tissue, where the immune response takes place.
The correct answer is true.
Answer:
hablame en español que yo no sé inglés :)
Answer:
-Ecosystems are the foundation of the 'Biosphere' and maintain the natural balance of the earth.
-An ecosystem is an ecological community comprised of biological, physical, and chemical components, considered as a unit.
Explanation: